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October 1, 2018: “ARL/Penn State Recent Advances in Flow-induced Vibration, Sound, and Alternating Stress”

  • October 1, 2018
  • 4:00 p.m.
  • 320 New Classroom Building
  • Dr. Steve Hambric, ARL/Penn State University
  • Faculty Host: Dr. Eric Paterson


Abstract: ARL/Penn State, established by the US Navy in 1945, has a long rich history in turbomachinery design.  The Garfield Thomas Water Tunnel was completed in 1949 and has served as a principal hydrodynamic testing facility for torpedoes and propulsors.  The Fluid Dynamics and Acoustics Office (FDAO) at ARL designs and tests turbomachinery, analyzes complex fluid flows using Computational Fluid Dynamics (CFD), and analyzes and measures vibration and sound.  The FDAO is closely aligned with the Penn State Graduate Program in Acoustics and the Penn State Center for Acoustics and Vibration (CAV), with many research faculty teaching classes and advising graduate students.  This presentation summarizes current ARL/Penn State FDAO capabilities, including recent High Performance Computing initiatives, vibroacoustic simulations using the Combined HydroAcoustic Modeling Program (CHAMP), measurements and simulations of fluid-structure interaction (FSI), and transient simulations of flow-induced vibration, alternating stress, and fatigue life.  Future initiatives include transient nonlinear vibro-acoustic simulations, massively parallel design optimization, assessment of variability and uncertainty in simulations of flow-induced vibration, and tomographic Particle Image Velocimetry (tomo-PIV) measurements of complex turbulent fluid flow.

Bio: Dr. Stephen A. Hambric is a Research Professor at the Applied Research Lab at Penn State, a Professor in the Graduate Program in Acoustics, and Director of Penn State’s Center for Acoustics and Vibration (CAV).  Prior to joining Penn State in 1996, Dr. Hambric worked for nine years in the Computational Mechanics Office at the Naval Surface Warfare Center, Carderock Division.  Dr. Hambric has directed many numerical and experimental flow, structural acoustics, and noise/vibration control research and development programs for the Navy, NASA, Army, U.S. industry, and the U.S. Nuclear Regulatory Commission.  He has authored or co-authored three books, over 80 conference papers, 40 journal articles, and two patents.  He teaches courses in Structural Acoustics, and Research and Writing for Acousticians on campus at Penn State, and also to off-campus students working in industry and government. He is a Fellow of the Institute for Noise Control Engineering (INCE) and of the American Society of Mechanical Engineers (ASME), and former chair of the ASME Noise Control and Acoustics Division.  He was also the General Chair of the International Noise Control Engineering conference (Internoise) in 2012, held in New York City, and now serves on the Board of Directors of International INCE as Vice President for the Pan-American region.